He has represented several unions and union groups, and written six books on labor unions, law, politics and his personal experiences. He has written for The New Republic magazine and contributed to several newspapers, and had commentaries on a number of radio and TV stations. Geoghegan ran in the Democratic primary for the Illinois's 5th congressional district in 2009[2] and came in 6th.

In his books, articles and commentaries, Geoghegan has urged a number of reforms to increase America's commitment to democracy at home and abroad. Geoghegan supports the National Popular Vote compact for presidential elections[5] on the grounds that it would increase electoral responsiveness, transparency and accountability.[6] He urges a reform of the redistricting of US congressional districts, arguing that currently over than 90% of Congressional seats are "safe", such that no challenger has a serious chance of unseating an incumbent and this discourages voter participation. He argues against the filibuster in the US Senate as undemocratic and unconstitutional under current rules. Fewer than 9% of the population resides in 20 states representing 40% of the seats in the Senate.[7] In regards to America's economy and quality of life, Geoghegan argues that Germany and other northern European countries "do both capitalism and socialism better than we do."[8][9]

^In the January 11, 2010 New York Times op-ed article, Geoghegan argues that since the vice-president's job is to vote in the Senate when the Senate is equally divided and since a filibuster under revised Senate Rule 22 removes the vice-president's ability to make that vote, it is an unconstitutional rule. He also argues that the Article requirement for just a bare majority to form a quorum supermajorities were expressly disapproved by the Founders. He says In Federalist 75, Hamilton dismissed a supermajority rule for a quorum thus: "All provisions which require more than a majority of any body to its resolutions have a direct tendency to embarrass the operation of government and an indirect one to subject the sense of the majority to that of the minority." Geoghegan continues, It would be illogical to preclude a supermajority {for a...} quorum while allowing it on an ad hoc basis any time a minority wanted to block a vote.